Claude Mythos 5 vs Claude Mythos Preview — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Mythos 5 vs Claude Mythos Preview

3 shared benchmarks

2

wins

0

ties

1

wins

88.0%

BrowseComp

86.9%

94.1%

GPQA Diamond

94.6%

80.3%

SWE-bench Pro

77.8%